Furniture spine unit with work surface



FIG. 1 is front perspective view of a furniture spine unit with work surface in accordance with my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a side view thereof; and,

FIG. 5 is a top view thereof.

Features shown in broken lines form no part of the claimed design. 

CLAIM The ornamental design for a furniture spine unit with work surface, as shown and described. 